Eccentric Exercise
Eccentric exercises are a valuable portion of your strength training routine, but you might not have realized it yet. You can do an eccentric exercise with any free weight exercise. There are two phases of a muscle contraction—the eccentric and concentric phases. Most lifters focus on the concentric movement, or the short contractions of the muscle; but if you decide to accent the eccentric exercise, or the lengthening, you can improve strength faster. The eccentric phase is often wear you form the microtears in muscles. When those tears repair, your muscle size grows.
Don’t do it all the time, though. You want to keep your muscles guessing.
